DE60122850T2 - Thread cutting method and thread cutting device for spinning machines - Google Patents

Description

BACKGROUND THE INVENTION

1st area the invention

The The present invention relates to a method and an apparatus for cutting off a thread end during removal in one Spinning machine such as a ring spinning machine and a Ringgarntordierer.

2. Description of the stand of the technique

In a spinning machine such as a ring spinning machine and A ring binder is to automatically exchange a cop perform, if a bobbin is full, required that associated with a roll part yarn Connected to a spindle while passing through a rotor extends. The reason for this is that the yarn is automatically wrapped around an empty bobbin should be, if after the Copaustausch a restart takes place. Around to fulfill this requirement, So far is a range for cutting a thread end to a Spindle basic area provided, and an area for winding a Thread end is in a lower area for cutting the thread end intended. In such an embodiment, after a full Coil has been obtained, a ring rail quickly lowered to a weird one To carry out winding. Subsequently Yarn is wound around the area for winding up the thread end. At the time of pulling out the yarn of the full bobbin becomes then the yarn (the thread end) coming from the area to wind up the yarn end is connected to the yarn of the full bobbin on which Section cut off to cut off the thread end.

When The above type of cutting device discloses the disclosed one Japanese Patent Application No. 48-93735 a cutting device, in which is a bobbin seat for fitting a lower portion of a bobbin in a Garnhalteeinrichtung is provided, which is a cutting blade Has. This cutting device is designed so that they Garnhalteeinrichtung together with a full bobbin yarn (a package) during of losing weight.

The Japanese Laid-Open Patent Application No. 62-141135 a device in which a spring area, which is a directionality has to be inclined in a circumferential direction at one area for winding a yarn end (an area for engagement with the yarn end) is, and feathers, one different from that of the feathered area have inclined direction, are provided alternately.

Japanese Laid-Open Patent Application No. 6-158442 discloses a device having an under winding crown fixed to a spindle, and a sliding sleeve provided so as to be vertically slidable with respect to a chain through which a spindle is inserted to be fixed. In this device, the thread end is adapted to be gripped between the lower winding crown and the sliding sleeve. This device will be described with reference to FIGS 9A and 9B described. In this device is an under winding crown 53 immediately below a bobbin fitting area 52 a spindle 51 fixed. A sliding sleeve 55 which is designed to be vertical with respect to a chain 54 is slidable, is with an inner flange 57a provided to a concave receiving area 56 form, at an upper area. A coil spring 58 is between the inner flange 57a and the upper surface of the chain 54 used. Due to the coil spring 58 is the sliding sleeve 55 by pressure in the direction of the lower winding crown 53 biased. An outer flange 57b is below the inner flange 57a educated. An abrasion ring 59 is on the outer flange 57b intended. On a lower surface of a ring rail 60 is also a head start 60a trained so that he is in contact with the Abriebring 59 device.

In this device, while removing the ring rail 60 lowered to a position for winding a thread end. While the ring rail 60 is lowered to a position of winding the thread end, the projection gets 60a the ring rail 60 in contact with the abrasion ring 59 , 9A shows a state in which the ring rail 60 is provided at a position for winding the thread end. In this state, the ring rail resists 60 the biasing force of the coil spring 58 and holds over the abrasion ring 59 , the sliding sleeve 55 at a position where a predetermined range for winding the thread end is maintained between the upper end of the sliding sleeve 55 and the lower surface of the lower winding crown 53 , After the thread end around the spindle 51 is wound around three to four times, the bobbin yarn 61 decreased. During removal, this is done with the bobbin yarn 61 Connected yarn cut off.

If an empty bobbin is inserted into the spindle, then the ring rail 60 lifted up to a winding start position. At this time, the sliding sleeve 55 raised to a position where the lower winding crown 53 in the concave receiving area 56 is housed, as in 5B represented by the biasing force of the coil spring 58 , At this time, the thread end wound inside the thread end winding portion becomes the concave receiving portion 56 held.

In the apparatus disclosed in Japanese Laid-Open Patent Application No. 48-93735, the thread end is wound around a spindle a plurality of times during detachment, so that the amount of the yarn remaining in the portion for winding up the thread end after being taken off becomes large. In this case, every time the removal is repeated, the amount of remaining yarn is increased. This makes it necessary that the remaining yarn is often disposed of. In addition, since the winding length of the yarn end is large, it is difficult to remove the remaining yarn. In the device disclosed in Japanese Laid-Open Patent Application No. 6-158442, the sliding sleeve needs to be replaced by the ring rail 60 be raised, whereby the structure of this device is quite complicated. In addition, the remaining yarn is after picking in the concave receiving area 56 pushed in, so that it becomes troublesome to remove the remaining yarn.

In Japanese Patent Laid-Open Publication No. 62-141135 On the other hand, the disclosed apparatus is a yarn handle portion (spring portion). with a special structure in the area for winding up the Thread end provided. Therefore, the winding length of the yarn end can be approximately equal to be a role. Compared with the prior art according to Japanese Patent Application No. 48-93735 is therefore the quantity of remaining yarn smaller. But it is necessary to have a special one To form area for winding the thread end, making the production tedious.

The UK patent GB 1209810 discloses a method and apparatus for breaking threads in a textile machine, comprising means for breaking threads passing from the bobbin of a tube placed on the textile spindle to an under winding point provided underneath the base of the tube, wherein breaking of the thread is automatic takes place as a result of removing the tube from the textile spindle.

SUMMARY THE INVENTION

Therefore The present invention is based on this situation has been made, and it is a primary objective of the present Invention, a method for cutting a thread end in one Spinning machine to create, in which the amount of yarn (the Fadenendes), which remains in a spindle base area, with a simple structure can be reduced.

One secondary The aim of the present invention is a device for cutting off to provide a thread end that can perform the above-mentioned cutting method.

Around the main one Goal is achieved according to a Main aspect of the present invention, a method for cutting a thread end for created a spinning machine, with the following steps: Providing an element for cutting a thread end with a Bobbin application area, on which a bobbin the spinning machine is attached, and a cutting area, the below as the spool insert area is provided, so that the element for cutting the thread end is raised and lowered along a blade extending from extending upwards from a spindle base region, and a yarn, that of a runner with bobbin yarn is connected between the element for cutting the thread end and the spindle base area is grasped; Stopping a ring rail at an area nearby a stopper portion between the element for cutting off the Thread end and spindle base area during slimming [doffing]; Stopping a spindle on the condition that the yarn is around the Spindle basic area is wound around; Pulling up the bobbin yarn by means of a removal device in this state; Lifting the element for cutting the yarn end together with the bobbin yarn until the middle of the drawing process; Passing the yarn from the bobbin out with the runner is connected between the element for cutting the thread end and the spindle base area; and grabbing the yarn between the An element for cutting the thread end extending from the bobbin yarn solved has, and the spindle base area, and cutting the yarn by means of of the cutting area.

According to the present invention, the bobbin is attached to the spindle under the condition that its lower portion is fitted to the bobbin insertion portion of the thread-cutting member. The ring rail is lowered by the same operation as in the prior art during removal, and the ring rail stops at an area near the abutment portion between the thread end cutting member and the spindle base portion. Then, the spindle stops under the condition that the yarn is wound at a position not higher than the abutting portion between the thread-end cutting member and the spindle base portion. Subsequently, will the bobbin yarn is pulled up by means of the detaching means, and the thread-end cutting member is lifted up to the middle of drawing together with the bobbin yarn, whereby yarn connected from the bobbin yarn to the traveler is interposed between the thread-end cutting member and the thread-cutting member Spindle basic area is guided. Subsequently, the yarn is gripped between the thread-end cutting member that has come loose from the bobbin yarn and the spindle base portion, the yarn is cut by the cutting portion. The end portion of the yarn connected to the runner is gripped between the thread end cutting member and the spindle base portion until subsequent removal. Therefore, the length of the yarn required for fixing the yarn connected to the runner to the spindle for the purpose of carrying out the subsequent yarn winding can be shortened without providing a complicated yarn grip portion. In addition, the yarn end engaged between the yarn end cutting member and the spindle base portion is connected to the bobbin yarn and released from the spindle during the subsequent removal.

It it is preferred that after the ring rail at a predetermined Position stops, the spindle stops on the condition that approximately a roll of yarn or less has been wound up.

by virtue of the above mentioned Configuration can be the length of the yarn between the element for cutting the yarn end and the spindle base area is taken further during slimming shortened become. During the subsequent Slimming is therefore the yarn exactly with the bobbin yarn connected and dissolves from the spindle.

It is also preferred to provide a hold-down means between the blade and the element for cutting the thread end provided is and is designed to prevent the element to Cutting the thread end further than to a predetermined height together with the bobbin yarn is raised, wherein the element for cutting the thread end itself from the bobbin yarn triggers, if the bobbin yarn over the predetermined height upwards is pulled.

by virtue of the above mentioned Configuration suppressed, if the element for cutting the thread end that is in the bobbin yarn is fitted and while of losing weight, reaches a predetermined height, the hold-down means the thread-end cutting element, so that it will not be lifted, and the item to cut off the thread end dissolves exactly from the bobbin yarn and grips the yarn connected from the bobbin yarn to the runner is.

Around the secondary one Goal is achieved according to a Another aspect of the invention, an apparatus for cutting a Thread end for one Spinning machine created in which an empty bobbin a spindle is attached and a bobbin yarn by means of a removal device up is drawn and then at Reboot the machine yarn is automatically wound, taking the device comprises: an element for cutting off a yarn end having a spool insert area, on which a bobbin attached, and a cutting area, which is lower than the bobbin application area is provided; a spindle base region from which extends a blade extends, the element for cutting the thread end is designed to be raised and lowered with respect to the blade to become; Means to the element for cutting the thread end always to press against the spindle base area, so as a thread end between the element for cutting the thread end and the spindle base area while to take the weight off; and a hold-down means between the Element for cutting off the thread end and the blade, which prevents that the element for cutting the thread end further than a predetermined distance is raised from a position where the Element for cutting the thread end against the spindle base area is present during of losing weight.

by virtue of the above mentioned Design will be during removing the yarn connected from the bobbin yarn to the runner, between the thread end cutting member and the spindle base portion taken and cut off on the side of the bobbin yarn.

Preferably The hold-down is a spring between the inner lower Area of the element for cutting the thread end and a stop is provided, which provided at a predetermined position of the blade is, and which the element for cutting the thread end always biased towards the spindle base area.

Due to the above-mentioned configuration, the thread-end cutting member exactly grips the yarn between the thread-end cutting member and the spindle base portion by a biasing force of a spring. If the element for cutting the thread end In addition, when it is lifted to a predetermined position during detachment and disengages from the bobbin yarn so as to fall down, the thread-end cutting member can quickly reach a position where the thread-end cutting member abuts against the spindle base portion to feed the yarn take.

In addition, will preferred that the hold-down means is a stop which on a predetermined position of the blade is provided and against the element for cutting the thread end is applied to prevent the Element for cutting the thread end more than a predetermined Distance is raised.

by virtue of the above mentioned Design is the constitution of the hold down to hold down the element for cutting the thread end, so this is not is raised, easy.

In addition, will preferred that the respective stop surfaces of the spindle base area and the cutting portion inclined outwardly toward the lower side are.

by virtue of the above mentioned Design serves the downward abutment surface the cutting area as a cover, and the yarn dissolves only difficult due to the sliding friction caused by the upwards abutment surface of the spindle base area and the yarn.

In addition, will preferred that an inclined tooth area protruding upwards, at the stop surface of the spindle base area is formed and an inclined tooth area, which protrudes downwards and engages with the inclined tooth area is, at the stop surface the cutting area is formed.

by virtue of the above mentioned Embodiment is the sliding friction, by both inclined tooth areas, which are engaged with one another, larger with Regarding the yarn, which intends to follow the tendency to move down. So dissolves The yarn is more difficult.

Around the element for cutting the thread end against the spindle base area to press can also the spindle base area and / or the element for cutting off the Thread end be provided with at least one magnet.

by virtue of the above mentioned Embodiment is the element for cutting the thread end against the spindle base area by an attraction force of a magnet pressed in a place where the element for cutting the thread end against the spindle base area is applied, and the yarn can be exactly between the element for cutting the thread end and the spindle base area are taken.

In addition, will preferred that the bobbin application area with means for strengthening a fitting force is provided with respect to the bobbin. therefore For example, the element for cutting the thread end is exactly brought together to a predetermined height with the bobbin yarn while of losing weight.

In addition, will preferred that the outer diameter the cutting area of the thread-end cutting element made smaller than that of a bottom portion of the bobbin. therefore is during removing the yarn connected from the bobbin yarn to the runner is, not cut off, before it has been taken between the element for cutting the thread end and the spindle base area.

In addition, can a biasing means may be provided to cut the element the thread end toward the spindle base area under the condition to bias, that the element for cutting the thread end is in a position in which it bears against the spindle base area. Therefore, the yarn can be exactly between the element for cutting the thread end and the spindle base area are taken.

In addition, can at least one of the stop surfaces between the thread-end cutting element and the spindle base region be made. The yarn can be more accurate between the element for cutting the thread end and the spindle base area are taken.

These and other advantages of the present invention will become apparent to those skilled in the art in reading and understanding the following detailed description Referring to the accompanying drawings clearly.

SHORT DESCRIPTION THE DRAWINGS

The accompanying drawings is / are:

1A a partially broken, schematic side view of a spindle according to an embodiment of the present invention, and 1B a cross-sectional view showing a mounting state of an element for cutting the thread end;

2A and 2 B Side views illustrating the functions during weight loss chen;

3A and 3B Side views illustrating the functions during weight loss;

4 a cross-sectional view of an element for cutting the thread end according to another embodiment of the present invention;

5 a cross-sectional view of an element for cutting the thread end according to still another embodiment of the present invention;

6A and 6B Cross-sectional views of elements for improving the fitting force according to another embodiment of the present invention;

7A and 7B schematic cross-sectional views showing the relationship between a lower part of a bobbin and a cutting region according to another embodiment of the present invention;

8th a schematic front view showing a cutting area according to another embodiment of the present invention; and

9A and 9B Cross-sectional views showing the state of the art.

DESCRIPTION THE PREFERRED EMBODIMENTS

Embodiment 1

An embodiment of the present invention will now be described with reference to FIGS 1A to 3B described.

As in 1A represented is a spindle 1 rotatably supported by a holder 3 which is connected to a spindle rail 2 about a camp 4 is fixed. The spindle 1 includes a stalk area 5 and a spindle axis 6 at a lower middle area of the stalk area 5 is fixed. The spindle axis 6 is rotatable by means of the holder 3 stored under the condition that they are in the holder 3 is used.

The stalk area 5 consists of a stalk 5a to which a bobbin B is attached; a spindle base area 5b standing on a lower side of the stem 5a is formed and has a larger diameter than the straw 5a ; and a belt hanging area 5c located on a lower side of the spindle base area 5b is trained; which are integrally formed. The stalk area 5 is made of aluminum or an aluminum alloy. A spindle axis is with respect to the stalk area 5 have been subjected to a use forms. In an upper area of the stalk 5a is an engaging element (for example a button component) 7 is provided to engage with the bobbin B, so that it is rotated integrally.

An element 8th for cutting the thread end is in the stalk 5a that extends from the spindle base area 5b extends upward, so provided that the element 8th can be moved vertically to cut the thread end. As it is in 1B is shown, includes the element 8th for cutting the thread end, a spool insert area 9 in which the bobbin B is inserted, and a cutting area 10 located at the side below the spool insert area 9 is provided. The bobbin application area 9 is formed in a cylindrical shape. It is also a concave area 9a for receiving a coil spring 11 on an inner side of the spool insert area 9 educated.

A collar 12 is at the stalk 5a fixed. On the condition that the element 8th for cutting the thread end in contact with the spindle base area 5b is, the lower part of the collar works 12 as a stopper at a position opposite the upper end of the spool insert area 9 , The outer diameter of the collar 12 is slightly smaller than the inner diameter of the concave portion 9a , Therefore, the element 8th for cutting the thread end along the collar 12 slide. The bobbin application area 9 is formed so that its outer diameter becomes smaller toward an upper side.

The coil spring 11 is in the concave area 9a accommodated. The lower end of the coil spring 11 is in contact with the lower end of the concave area 9a and its upper end is in contact with the lower end of the collar 12 , The coil spring 11 forms a biasing agent, which is the element 8th for cutting the thread end always in the direction of the spindle base area 5a biases. In addition, the coil spring forms 11 a hold-down means for holding down the element 8th for cutting off the thread end so that it is not raised by a predetermined distance or more from the position where the element 8th for cutting the thread end in contact with the spindle base area 5b is.

The cutting area 10 has a circular shape. In the present embodiment, the diameter of the end of the straw is formed to be larger than the outer diameter of the un the other end of the bobbin B.

On an outer circumferential surface of the lower portion of the spool insert area 9 is an annular groove 13 educated. In the groove 13 is a rubber ring 14 received in such a state that a part thereof extends outward. The rubber ring 14 forms a means for improving a fitting force between the spool insert area 9 and the bobbin B.

It Now the function of the device formed as described above described.

The bobbin 9 gets on the spindle 1 attached so as to be integrally rotated on the condition that its lower part is in the spool insert area 9 of the element 8th is fitted for cutting the thread end, and its upper part with the engagement element 7 is engaged. If the spindle 1 is rotated by a belt (not shown), which is against the belt hanging area 5c is pressed, the bobbin B is integral with the spindle 1 turned.

When the spinning operation is continued and the bobbin is filled, a predetermined stop operation is carried out. Then a ring rail 15 rapidly lowered by the same process as in the prior art, whereby the bobbin yarn (the full bobbin) 16 attached to the spindle 1 attached, an oblique winding 16a is subjected. Then the ring rail stops 15 at an area near the abutment area between the element 8th for cutting off the thread end and the spindle base area 5b while a runner 17 at the ring rail 15 on the side slightly lower than the abutment area between the element 8th for cutting off the thread end and the spindle base area 5b is positioned.

At a position on the side slightly below the abutment area between the element 8th for cutting off the thread end and the spindle base area 5b a brake is applied so that approximately one roll of yarn is wound up and the spindle 1 is stopped. Then a Fadenleitauge 18 provided at a retraction position, so as not to hinder the removal, so that the in 2a shown state is obtained.

As in 2 B is shown, then the bobbin yarn (the full bobbin) 16 by means of a removal device 19 pulled up. The element 8th for cutting the yarn end is together with the bobbin yarn 16 raised to the middle of the drawing. Therefore, the yarn Y, that of the bobbin yarn 16 to the runner 17 connected between the element 8th for cutting the thread end and the spindle base area out. If the element 8th for cutting the yarn end together with the bobbin yarn 16 from the in 2A When it is raised, it moves around the bobbin yarn 5b wrapped yarn Y along an outer surface of the straw 5a ,

If the element 8th for cutting the yarn end, which together with the bobbin yarn 16 has been raised, reaches a predetermined height, the element dissolves 8th for cutting the yarn end from the bobbin yarn 16 by means of a biasing force of the coil spring 11 , If the element 8th has been lowered to cut off the thread end to a position at which the element 8th for cutting the thread end against the spindle base area 5b is applied, the yarn Y, that of the bobbin yarn 16 to the runner 17 connected between the element 8th for cutting off the thread end and the spindle base area 5b taken. Since the bobbin yarn 16 is further raised, the yarn Y is in a tensioned state against the cutting area 10 pressed to be cut, creating a in 3A shown state is obtained.

Even if the yarn Y by means of the cutting area 10 is cut while the element 8th for cutting the yarn end from the bobbin yarn 16 solves and is lowered, the element falls 8th for cutting the thread end down directly to a position where the element 8th for cutting the thread end against the bobbin yarn 5B after it leaves the bobbin yarn 16 has solved. Therefore, the yarn Y becomes between the element 8th for cutting off the thread end and the spindle base area 5b taken.

After the bobbin yarn 16 has been taken to a in 3B To obtain shown state, an empty bobbin B is in the spindle 1 used. Then the Fadenleitauge 18 swirled around so that it is at a pickup position, and then the machine is restarted. The end of the yarn Y, with the runner 17 is connected between the element 8th for cutting the yarn end and the bobbin yarn 5b taken until the subsequent weight loss. That between the element and the spindle base area 5b taken thread end is with the bobbin 16 connected and detached from the spindle 1 during subsequent weight loss.

• (1) Während des Abnehmens wird das Element 8 zum Abschneiden des Fadenendes, das mit dem Schneidbereich 10 versehen ist, zusammen mit dem Spulenkörpergarn 16 angehoben und abgesenkt, wodurch das Garn Y, das von dem Spulenkörpergarn 16 hin zum Läufer 17 verbunden ist, zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spulenkörpergarn 5b ergriffen wird und mittels des Schneidbereichs 10 abgeschnitten wird. Anders als bei einer herkömmlichen Vorrichtung, in welcher das Fadenende dadurch ergriffen wird, dass es um die Spindel 1 herumgewickelt wird, ist es daher nicht erforderlich, das Fadenende mehrere Male aufzuwickeln. Außerdem kann die Menge des Garns (des Fadenendes), die in dem Spindelgrundbereich verbleibt, in einer einfachen Konfiguration vermindert werden, ohne einen speziellen Bereich zum Aufwickeln des Fadenendes auszubilden. Außerdem ist das Fadenende, das zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spulenkörpergarn 5b ergriffen ist, mit dem Spulenkörpergarn 16 verbunden und löst sich von der Spindel 1 während des anschließenden Abnehmens.
• (2) Es ist ein Niederhaltemittel (die Schraubenfeder) 11 vorgesehen, um das Element 8 zum Abschneiden des Fadenendes niederzuhalten, so dass es nicht auf eine vorbestimmte Höhe oder mehr angehoben wird zusammen mit dem Spulenkörpergarn 16. Daher löst sich, wenn das Spulenkörpergarn 16 um einen vorbestimmten Abstand oder mehr heraufgezogen wird, das Element 8 zum Abschneiden des Fadenendes von dem Spulenkörpergarn 16. Wenn das Element 8 zum Abschneiden des Fadenendes eine vorbestimmte Höhe während des Abnehmens erreicht, löst sich daher das Element 8 zum Abschneiden des Fadenendes unweigerlich von dem Spulenkörpergarn 16 und ergreift das Garn, das von dem Spulenkörpergarn 16 hin zum Läufer 17 verbunden ist.
• (3) Das Element 8 zum Abschneiden des Fadenendes ist stets hin zu dem Spindelgrundbereich 5b mittels der Schraubenfeder 11 vorgespannt, so dass das Element 8 zum Abschneiden des Fadenendes exakt das Garn Y ergreifen kann, das mit dem Läufer 17 verbunden ist, während es gegen den Spindelgrundbereich 5b anliegt. Wenn der Spulenkörper-Einsatzbereich 9 sich von dem Spulenkörper B löst, ist außerdem das Element 8 zum Abschneiden des Fadenendes mittels der Schraubenfeder 11 nach unten vorgespannt. Selbst wenn das Garn Y abgeschnitten wird, während das Element 8 zum Abschneiden des Fadenendes herabfällt, kann daher das Element 8 zum Abschneiden des Fadenendes unmittelbar eine Position erreichen, wo das Element 8 zum Abschneiden des Fadenendes gegen den Spindelgrundbereich 5b anliegt, und das Garn Y ergreifen.
• (4) Der Spulenkörper-Einsatzbereich 9 ist mit Mitteln (dem Gummiring 14) zum Verbessern einer Passkraft mit Bezug auf den Spulenkörper B versehen. Daher widersteht das Element 8 zum Abschneiden des Fadenendes der Vorspannkraft der Schraubenfeder 11, um auf eine vorbestimmte Höhe zusammen mit dem Spulenkörpergarn 16 unweigerlich angehoben zu werden.

The present embodiment has the following effects.

• (1) While losing weight, the item becomes 8th for cutting the thread end, which is connected to the cutting area 10 is provided, together with the bobbin yarn 16 lifted and lowered, whereby the yarn Y, that of the bobbin yarn 16 to the runner 17 connected between the element 8th for cutting the yarn end and the bobbin yarn 5b is grasped and by means of the cutting area 10 is cut off. Unlike a conventional device in which the thread end is grasped by being around the spindle 1 Therefore, it is not necessary to wind the thread end several times. In addition, the amount of yarn (the thread end) remaining in the spindle base portion can be reduced in a simple configuration without forming a specific thread end winding portion. Also, the thread end is between the element 8th for cutting the yarn end and the bobbin yarn 5b is taken with the bobbin yarn 16 connected and detached from the spindle 1 during the subsequent weight loss.
• (2) It is a hold-down means (the coil spring) 11 provided to the element 8th hold down to cut off the thread end so that it is not raised to a predetermined height or more together with the bobbin yarn 16 , Therefore, dissolves when the bobbin yarn 16 is pulled up by a predetermined distance or more, the element 8th for cutting the yarn end from the bobbin yarn 16 , If the element 8th for cutting the thread end reaches a predetermined height during removal, therefore, the element dissolves 8th for cutting the yarn end inevitably from the bobbin yarn 16 and grips the yarn coming from the bobbin yarn 16 to the runner 17 connected is.
• (3) The element 8th for cutting the thread end is always to the spindle base area 5b by means of the coil spring 11 biased so that the element 8th to cut off the yarn end exactly the yarn Y can take that with the runner 17 connected while it is against the spindle base area 5b is applied. When the bobbin application area 9 is detached from the bobbin B, is also the element 8th for cutting the thread end by means of the coil spring 11 biased downwards. Even if the yarn Y is cut off while the item is 8th for cutting off the thread end, therefore, the element 8th to cut off the thread end immediately reach a position where the element 8th for cutting the thread end against the spindle base area 5b is applied, and take the Y yarn.
• (4) The bobbin application area 9 is with means (the rubber ring 14 ) for improving a fitting force with respect to the bobbin B. Therefore, the element resists 8th for cutting off the thread end of the biasing force of the coil spring 11 to a predetermined height together with the bobbin yarn 16 inevitably to be raised.

Embodiment 2

Another thread engaging portion between a thread-end cutting member and a blade portion will now be described with reference to FIGS 4 described.

As in 4 are shown, respective abutment surfaces of a spindle base area 5b and a cutting area 10 (an upper surface of the spindle base area 5b and a lower surface of the cutting area 10 ), which form the thread gripping area, inclined outwards towards the lower side. In the case where a yarn Y in the above structure is pulled, the yarn Y becomes from the center of the straw 5 while turning it outward. Since the thread gripping area is inclined, but the yarn Y dissolves difficult. That is, the lower surface of the cutting area 10 serves as a cover, and therefore yarn Y becomes difficult to release due to the sliding friction passing through the upper surface of the spindle base portion 5b and the yarn Y is generated.

An upwardly projecting inclined tooth area 5b1 is also on the upper surface of the spindle base area 5b formed, and a downwardly projecting inclined tooth area 10b that with the sloped tooth area 5b1 is engaged on the lower surface of the cutting area 10 educated. Due to the above-mentioned embodiment, the through the inclined tooth areas 5b1 and 10b , which are engaged with each other, generated sliding friction larger with respect to the yarn Y, which intends to move downwards on the inclination. Therefore, Y yarn is more difficult to peel off.

Yarn Y becomes more difficult to release, as described above, which causes a spring force of a coil spring 11 , which presses against the thread catching area, can be made smaller.

Embodiment 3

It Now, another embodiment of the Described element for cutting the thread end.

As a biasing means for biasing the element 8th for cutting the thread end towards the spindle base area 5b under the condition, that the element 8th for cutting the thread end against the spindle base area 5b is applied, a magnet can be used instead of a spring.

For example, as in 5 represented, a magnet 20 in an upper surface of the spindle base area 5b buried, and a magnetic material (such as iron) 21 is at a lower surface of the bottom portion of the element 8th fixed to cut off the thread end. Alternatively, magnets can be used on both sides of the spindle base area 5b and the element 8th be provided for cutting the thread end. It may also be possible for a magnet to be on the side of the element 8th is provided for cutting the thread end and a magnetic material on the side of the spindle base area 5b , Even in such a configuration, the yarn Y can be exactly between the element 8th for cutting off the thread end and the spindle base area 5b be taken.

In addition, no spring is used as a biasing means, so that it is not necessary, the concave area 9a in the bobbin application area 9 train. As a means of holding down the element 8th For cutting the thread end so that it is not raised, also a stop ring 22 at a predetermined position of the straw 5a be fixed as a stopper. The element 8th for cutting the thread end is against the stop ring 22 while it is together with the bobbin yarn 16 is raised so that it is from the bobbin yarn 16 solves.

Embodiment 4

It will now be another embodiment of the Means to improve the fit described.

In the first embodiment, although the rubber ring 14 is used as a means for improving the fitting force, the present invention is not limited thereto. As in 6A For example, a means for improving the fitting force may be formed by accommodating a spring material 23 in a concave area 9b located in an outer surface of the bobbin insert area 9 is formed so that a bow portion protrudes from there. As a spring material, a plate-shaped or linear spring material can be used. The spring material may be formed in a partially cut-away ring shape, rather than in a complete ring shape.

As in 6B As shown, the means for improving the fitting force may also be formed by providing a button 25 that by means of a spring 24 is biased, in a concave area, which in an outer surface of the spool insert area 9 is trained.

Embodiment 5

The Relationship between the lower portion of the bobbin and the cutting area in another embodiment will now be explained.

The outer diameter of the cutting area 10 can be made smaller than the outer diameter of the bottom portion of the bobbin B. For example, as in 7A shown, the lower end portion of the bobbin B expand. Alternatively, as in 7B shown, the outer diameter of the cutting area 10 be made smaller without changing the shape of the bobbin B.

In the above-mentioned cases, the yarn Y, that of the bobbin yarn 16 to the runner 17 connected, not be cut off, between it and the element 8th for cutting off the thread end and the spindle base area 5b has been taken while losing weight.

Embodiment 6

A other embodiment the cutting area will now be described.

The shape of the cutting area 10 is not limited to a circle. As in 8th shown, the cutting area 10 with an annular blade 26 as a separate component as well as with a number of caulking areas 27 for fixing the blade 26 be provided. The cutting area 10 may also be formed in a sawtooth shape.

• (A) Die optimale Länge des Garns, das an einer Position nicht höher als der Anlagebereich zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spindelgrundbereich 5b herumgewickelt ist, beträgt 1/3 bis 1/2 Rolle. In diesem Fall ist das zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spindelgrundbereich 5b ergriffene Fadenende mit dem Spulenkörpergarn 16 verbunden und löst sich wahrscheinlicher von dem Spindel 1 während des anschließenden Abnehmens.
• (B) Als Mittel zum exakten Ergreifen des Garns zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spindelgrundbereich 5b kann zumindest eine der Anlageflächen zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spindelgrundbereich 5b rauh gemacht werden, statt ein Vorspannmittel zum Vorspannen des Elements 8 zum Abschneiden des Fadenendes hin zum Spindelgrundbereich 5b zu verwenden. Indem eine der Anlageflächen rauh gemacht wird, kann ein Reibwiderstand verstärkt werden. In diesem Fall wird es, selbst wenn das Garn Y, das zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spindelgrundbereich 5b ergriffen ist, während des anschließenden Aufwickelns des Garns gespannt wird, unwahrscheinlich, dass das Garn Y zwischen dem Element 8 zum Abschneiden des Fadenendes und dem Spindelgrundbereich 5b herausgezogen wird.
• (C) Ein Antriebssystem der Spindel 1 ist nicht auf den Riemenantrieb begrenzt und kann auch ein so genanntes Einzelspindelantriebssystem sein, in welchem ein Motor für jede Spindel vorgesehen ist.

The present embodiment is not limited to that described above. For example, the present embodiment may be as follows:

• (A) The optimum length of the yarn, which at a position not higher than the abutment area between the element 8th for cutting off the thread end and the spindle base area 5b is about 1/3 to 1/2 roll. In this case, that is between the element 8th for cutting off the thread end and the spindle base area 5b taken thread end with the bobbin yarn 16 connected and more likely detached from the spindle 1 during the subsequent weight loss.
• (B) As a means of accurately grasping the yarn between the element 8th for cutting off the thread end and the spindle base area 5b can be at least one of the contact surfaces between the element 8th for cutting off the thread end and the spindle base area 5b rough instead of a biasing means for biasing the element 8th for cutting the thread end towards the spindle base area 5b to use. By making one of the abutment surfaces rough, frictional resistance can be enhanced. In this case it will, even if the yarn is Y, that between the element 8th for cutting off the thread end and the spindle base area 5b is taken, during the subsequent winding of the yarn is tensioned, unlikely that the yarn Y between the element 8th for cutting off the thread end and the spindle base area 5b is pulled out.
• (C) A drive system of the spindle 1 is not limited to the belt drive and may also be a so-called single spindle drive system in which a motor is provided for each spindle.

Claims (13)

Method for cutting a thread end for a spinning machine, comprising the following steps: providing an element ( 8th ) for cutting a thread end with a spool insert area ( 9 ), to which a bobbin (B) of the spinning machine is attached, and a cutting area ( 10 ), which is lower than the bobbin application area ( 9 ) is provided so that the element ( 8th ) for cutting the thread end along a blade ( 5a ) is raised and lowered, extending from a spindle base area ( 5b ) extending upwards, and a yarn (Y) coming from a runner ( 17 ) with bobbin yarn ( 16 ), between the element ( 8th ) for cutting the thread end and the spindle base area ( 5b ) is seized; Stopping a ring band ( 15 ) at an area near a stopper area between the element ( 8th ) for cutting off the thread end and the spindle base area ( 5b ) while losing weight; Stopping a spindle ( 1 ) on the condition that the yarn (Y) around the spindle base area ( 5b ) is wrapped around; Pulling up the bobbin yarn ( 16 ) by means of a removal device ( 19 ) in this state; Lifting the element ( 8th ) for cutting the yarn end together with the bobbin yarn ( 16 ) until the middle of the drawing process; Passing the yarn (Y) coming from the bobbin yarn ( 16 ) with the runner ( 17 ), between the element ( 8th ) for cutting off the thread end and the spindle base area ( 5b ); and gripping the yarn (Y) between the element ( 8th ) for cutting the thread end extending from the bobbin yarn ( 16 ) and the spindle basic area ( 5b ), and cutting the yarn (Y) by means of the cutting area (FIG. 10 ). A method of cutting a yarn end for a spinning machine according to claim 1, wherein the spindle ( 1 ) stops under the condition that approximately one spool of thread has been wound up. Method for cutting a thread end for a spinning machine according to claim 1 or 2, further comprising a hold-down means ( 11 . 12 . 22 ) between the blade ( 5a ) and the element ( 8th ) is provided for cutting the thread end and is designed to prevent the element ( 8th ) for cutting the thread end further than a predetermined height together with the bobbin yarn ( 16 ), the element ( 8th ) for cutting the thread end away from the bobbin yarn ( 16 ) when the bobbin yarn ( 16 ) is pulled upwards beyond the predetermined height. Device for cutting off a thread end for a spinning machine, in which an empty bobbin (B) on a spindle ( 1 ) and a bobbin yarn ( 16 ) by means of a removal device ( 19 ) is pulled upwards and then yarn is automatically wound up when the machine is restarted, the apparatus comprising: an element ( 8th ) for cutting a thread end with a spool insert area ( 9 ), on which a bobbin (B) is mounted, and a cutting area ( 10 ), which is lower than the bobbin application area ( 9 ) is provided; a spindle basic area ( 5b ), from which a blade ( 5a ), wherein the element ( 8th ) for cutting off the thread end, with respect to the blade ( 5a ) to be raised and lowered; Means for always pulling the thread end against the spindle base ( 5b ) so as to thread end between the element ( 8th ) for cutting off the thread end and the spindle base area ( 5b ) while losing weight; and a hold-down means ( 11 . 12 . 22 ) between the element ( 8th ) for cutting the thread end and the blade ( 5a ), which prevents the element ( 8th ) is lifted to cut off the thread end further than a predetermined distance from a position where the element ( 8th ) for cutting off the thread end against the spindle base area ( 5b ), during the weight loss. A yarn end cutting apparatus for a spinning machine according to claim 4, wherein the hold-down means is a spring (10). 11 ), which is between the inner lower portion of the Ele ment ( 8th ) for cutting the thread end and a stop ( 12 ) provided at a predetermined position of the blade ( 5a ), and which the element ( 8th ) for cutting the thread end always to the spindle base area ( 5b ). A yarn end cutting apparatus for a spinning machine according to claim 4, wherein said hold-down means is a stopper (10). 12 . 22 ) which is at a predetermined position of the blade ( 5a ) and against the element ( 8th ) to cut off the thread end to prevent the element ( 8th ) is lifted to cut off the yarn end further than a predetermined distance. Apparatus for cutting a thread end for a spinning machine according to claim 4, wherein the respective abutment surfaces of the spindle base region ( 5b ) and the cutting area ( 10 ) are inclined outwards towards the lower side. A yarn end cutting apparatus for a spinning machine according to claim 7, wherein an inclined tooth portion (Fig. 5b1 ) projecting upwards, at the abutment surface of the spindle base area (FIG. 5b ) is formed and an inclined tooth area ( 10b ) projecting downwards and with the inclined tooth area ( 5b1 ) is engaged, on the abutment surface of the cutting area ( 10 ) is trained. A yarn end cutting apparatus for a spinning frame according to claim 4, wherein 8th ) for cutting off the thread end against the spindle base area ( 5b ), the spindle basic area ( 5b ) and / or the element ( 8th ) for cutting off the thread end with at least one magnet ( 20 . 21 ) is provided. A yarn end cutting apparatus for a spinning machine according to any one of claims 4 to 9, wherein the bobbin insert area (11) 9 ) with means ( 14 . 23 . 24 . 25 ) is provided for reinforcing a fitting force with respect to the bobbin (B). A device for cutting a thread end for a spinning machine according to one of the claims 4 to 10, wherein the outer diameter of the cutting region ( 10 ) of the element ( 8th ) for cutting the yarn end is made smaller than that of a bottom portion of the bobbin (B). A yarn end cutting apparatus for a spinning machine according to any one of claims 4 to 10, wherein a biasing means (15) comprises 11 ) is provided to the element ( 8th ) for cutting the thread end towards the spindle base area ( 5b ) under the condition that the element ( 8th ) for cutting off the thread end at a position in which it bears against the spindle base area ( 5b ) is present. Device for cutting a thread end for a spinning machine according to one of the claims 4 to 11, wherein at least one of the abutment surfaces between the element ( 8th ) for cutting off the thread end and the spindle base area ( 5b ) can be rough.